April 1939

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Features

A Magnificent Tidal Front in A Chinese River

Here Comes Television!

Will Serve Entertainment Needs, Technical Equipment Has Limitations, Standards Laid Down to Prevent Obsolescence of Receivers

By O. B. Hanson

Quicker than the Eye

Demand for Better Steel Has Made Necessary More Careful Control of Processes, Photo-Electric Cell Measures Temperatures Accurately

Personalities in Science, April 1939

Telescoptics, April 1939

Current Bulletin Briefs, April 1939

Legal High-Lights, April 1939

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Digital Issue ?Read or download this issue’s articles online. *A printed copy of this issue is not included. $7.99

Print + Digital All Access Subscription ?Read or download this issue’s articles online. Plus, subscribe to get Print, Online and Tablet access to the next 12 new issues to be released as well as Online access to archives back to 1845. $99.00

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